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Chapter 6
6.1 Fault Alarm Display & Corrective Action
6.1.1 High Pressure Alarm
Cause:
Reset:
Output:
Actions:
The current pressure was higher than the High Limit
Pressure while the system was operating.
Auto reset clear. The current pressure was less than
the High Limit Pressure and the system has stopped.
LCD Display/ERROR LED/BUZZER
Please check the pipe and system.
6.1.2 Low Pressure Alarm
Cause:
Reset:
Output:
Actions:
The current pressure was less than the Low Limit
Pressure while the system was operating.
The current pressure was higher than the Low Limit
Pressure and the system has stopped.
LCD Display/ERROR LED/BUZZER
Please check the pipe and system. The system will
stop if the alarm is active for longer than the set time
(refer to 3.2.4). Press Cancel to reset and Run/Stop to
run the system again.
6.1.3 Low Water Level Alarm
Cause:
Reset:
Output:
Actions:
Low water level signal was present while the system
was operating.
The Cancel key must be pressed and selection switch
must be off.
LCD Display/ERROR LED/BUZZER
Please check the pipe, low water level wiring and
change the low water level sensor. The system will stop
if the alarm is active for longer than the set time (refer to
3.2.4). Press Cancel to reset and Run/Stop to run the
system again.
6.1.4 Sensor Fail/Open Circuit
Cause:
Reset:
Output:
Actions:
The pressure sensor has failed, shorted, or opened.
The sensor is normally operating.
LCD Display/ERROR LED/BUZZER
Please check the connection to the pressure sensor and
replace if necessary. Press Run/Stop to run the system
after the sensor is replaced.
Cause:
The VFD Error Signal was present while the system
was operating.
Error signal was cleared after VFD reset and the system
has stopped.
LCD Display/ERROR LED/BUZZER
Please check the wiring and VFD parameter. Repair the
inverter or replace it.
6.1.5 VFD Error
Reset:
Output:
Actions:
SJE-Rhombus VFDC-4000 Controller User Manual
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